4.1.15-rt18-rc1 stable review patch.
If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

The upstream changes were:
6047967 ksoftirqd: Use new cond_resched_rcu_qs() function
28423ad ksoftirqd: Enable IRQs and call cond_resched() before poking RCU

Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 kernel/softirq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 0fd93311536f..f4c2e679a7d7 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -599,8 +599,8 @@ static void run_ksoftirqd(unsigned int cpu)
 
 	do_current_softirqs();
 	current->softirq_nestcnt--;
-	rcu_note_context_switch();
 	local_irq_enable();
+	cond_resched_rcu_qs();
 }
 
 /*
-- 
2.7.0